Make it as easy as possible for listeners to rate your show.
Instead of telling listeners to "Go to Apple Podcasts and rate the show", you can just tell them to "Click rate on our website" or "Go to mydomain.com/rate" and they'll be forwarded along to the place of your choosing.
You can forward them automatically depending on their platform, or have them choose on their own.
Search Engine Optimization. Your site has been obsessively optimized to rank high on a search results page.